diff options
Diffstat (limited to 'lib/Net/IMAP')
| -rw-r--r-- | lib/Net/IMAP/InterIMAP.pm | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/lib/Net/IMAP/InterIMAP.pm b/lib/Net/IMAP/InterIMAP.pm index e2b89ec..49ea343 100644 --- a/lib/Net/IMAP/InterIMAP.pm +++ b/lib/Net/IMAP/InterIMAP.pm @@ -63,7 +63,9 @@ my %OPTIONS = ( command => qr/\A(\P{Control}+)\z/, 'null-stderr' => qr/\A(YES|NO)\z/i, compress => qr/\A(YES|NO)\z/i, - SSL_protocols => qr/\A(!?$RE_SSL_PROTO(?: !?$RE_SSL_PROTO)*)\z/, + SSL_protocols => qr/\A(!?$RE_SSL_PROTO(?: !?$RE_SSL_PROTO)*)\z/, # TODO deprecated, remove in 0.6 + SSL_protocol_min => qr/\A(\P{Control}+)\z/, + SSL_protocol_max => qr/\A(\P{Control}+)\z/, SSL_fingerprint => qr/\A((?:[A-Za-z0-9]+\$)?\p{AHex}+(?: (?:[A-Za-z0-9]+\$)?\p{AHex}+)*)\z/, SSL_cipherlist => qr/\A(\P{Control}+)\z/, SSL_hostname => qr/\A(\P{Control}*)\z/, @@ -1676,7 +1678,7 @@ sub _ssl_verify($$$) { } my %SSL_proto; -BEGIN { +BEGIN { # TODO deprecated, remove in 0.6 sub _append_ssl_proto($$) { my ($k, $v) = @_; $SSL_proto{$k} = $v if defined $v; @@ -1689,6 +1691,15 @@ BEGIN { _append_ssl_proto( "TLSv1.3", eval { Net::SSLeay::OP_NO_TLSv1_3() } ); } +# see ssl/ssl_conf.c:protocol_from_string() in the OpenSSL source tree +my %SSL_protocol_versions = ( + "SSLv3" => eval { Net::SSLeay::SSL3_VERSION() } + , "TLSv1" => eval { Net::SSLeay::TLS1_VERSION() } + , "TLSv1.1" => eval { Net::SSLeay::TLS1_1_VERSION() } + , "TLSv1.2" => eval { Net::SSLeay::TLS1_2_VERSION() } + , "TLSv1.3" => eval { Net::SSLeay::TLS1_3_VERSION() } +); + # $self->_start_ssl($socket) # Upgrade the $socket to SSL/TLS. sub _start_ssl($$) { @@ -1703,7 +1714,22 @@ sub _start_ssl($$) { my $ssl_options = Net::SSLeay::OP_SINGLE_DH_USE() | Net::SSLeay::OP_SINGLE_ECDH_USE(); $ssl_options |= Net::SSLeay::OP_NO_COMPRESSION(); - if (defined (my $protos = $self->{SSL_protocols})) { + if (defined $self->{SSL_protocol_min} or defined $self->{SSL_protocol_max}) { + $self->panic("Failed requirement libssl >=1.1.0") if $OPENSSL_VERSION < 0x1010000f; + my ($min, $max) = @$self{qw/SSL_protocol_min SSL_protocol_max/}; + if (defined $min) { + my $v = $SSL_protocol_versions{$min} // $self->panic("Unknown protocol version: $min"); + $self->_ssl_error("CTX_set_min_proto_version()") unless Net::SSLeay::CTX_set_min_proto_version($ctx, $v) == 1; + $self->log("Minimum SSL/TLS protocol version: ", $min) if $self->{debug}; + } + if (defined $max) { + my $v = $SSL_protocol_versions{$max} // $self->panic("Unknown protocol version: $max"); + $self->_ssl_error("CTX_set_max_proto_version()") unless Net::SSLeay::CTX_set_max_proto_version($ctx, $v) == 1; + $self->log("Maximum SSL/TLS protocol version: ", $max) if $self->{debug}; + } + } elsif (defined (my $protos = $self->{SSL_protocols})) { # TODO deprecated, remove in 0.6 + $self->warn("SSL_protocols is deprecated and will be removed in a future release! ", + "Use SSL_protocol_{min,max} instead."); my ($proto_include, $proto_exclude) = (0, 0); foreach (split /\s+/, $protos) { my $neg = s/^!// ? 1 : 0; |